246 TETRAD YNAMI A.— SILICULOSA. 



420. BARBAREA. Silique 4-edged. Cotyledons ac- 

 cumbent. Seeds in a single row. Cal. equal at 

 the base, erect. Shorter filaments with inter- 

 mediate glands. 



■121. NASTURTIUM. Silique subterete, often short ; 

 valves concave, nerveless, not carinate. Cal. 

 equal, spreading. Cotyledons accumbent. 



422. SISYMBRIUM. Silique subterete. Cotyledons 



incumbent, sometimes oblique, flat. Cal. mostly 

 spreading, equal at the base. 



423. HESPERIS. Silique subquadrangular, or ancipi- 



tal. Slig. subsessile, of 2 connivent lobes. Co- 

 tyledons incumbent, flat. Cal. closed, sulcate 

 at the base. 



424. SINAPIS. Silique subterete, 2-valved ; (some- 



times of 2 articulations, of which the upper one 

 is nerveless.) Cotyledons conduplicate. Seeds 

 globose, in a single row. Cal. spreading. 



425. RAPHANUS. Silique valueless. Cotyledons con- 



duplicate. Cal. closed. 

 42G. CLEOME. Cal. 4-leaved, spreading. Pet. 4, 



unequal. Stam. 6, unequal, often connected at 



the base. Silique stipitate in the calyx. 

 127. POLANISIA. Cal. 4-leaved, spreading. Pet. 



4, unequal. Stain. 8 — 32. Silique sessile in the 



calyx. 



TETRAD YNAMIA 

 SILICULOSA. 



410. CAKILE. Sea-rocket. Crucifera . 



C. maritima : /3. americana : leaves cuneate-oblon^ 

 obtuse, sinuately toothed ; joints of the silicle 1 

 seeded ; the uppermost ovate, acute. 



HAB. Sea-coast. July— Oct. 0. Plant flesh* 

 heavy, branch. ; fl. purp., corymb. 



411. THLASPI. Penny-cress. Crucifera?. 

 V. ancuse: leaves oblong-sagittate, coarsely tootf. 



